Table 5.
Duration of moderately bad symptoms, according to duration of antibiotic prescribed and antibiotic class
| Duration of moderately bad symptoms, median days (IQR) | Univariate risk ratio, (95% CI, P-value) | Hazard ratio controlling for clustering, antibiotic (immediate or type (delayed), and baseline severity score 95% (CI, P-value) | Hazard ratio controlling for propensity score, (95% CI, P-value) | Hazard ratio controlling for propensity score in imputed dataset, (95% CI, P-value) | |
|---|---|---|---|---|---|
| Duration of antibiotic prescription | |||||
| 5 days (reference category) | 3 (2–5) | 1.00 | 1.00 | 1.00 | 1.00 |
| 7 days | 3 (2–5) | 1.06 (0.89 to 1.27) P= 0.527 |
1.05 (0.91 to 1.23) P= 0.488 |
1.05 (0.90 to 1.23) P= 0·513 |
1.07 (0.91 to 1.25) P= 0.418 |
| 10 days | 3 (2–5) | 0.99 (0.79 to 1.24) P= 0.957 |
0.99 (0.83 to 1.20) P= 0.963) |
0.92 (0.74 to 1.14) P= 0.432 |
0.92 (0.73 to 1.15) P= 0.460 |
| Antibiotic class | |||||
| Phenoxymethylpenicillin (reference category) | 3 (2–5) | 1.00 | 1.00 | 1.00 | 1.00 |
| Other antibiotics | 3 (2–5) | 0.94 (0.80 to 1.10) P= 0.435 |
0.94 (0.82 to 1.07) P= 0.350 |
1.03 (0.88 to 1.21) P= 0.698 |
1.04 (0.89 to 1.21) P= 0.631 |
IQR = interquartile range.